Wall charger



FIG. 1 is a top, front perspective view of a wall charger showing my design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a left elevational view thereof;

FIG. 5 is a right elevational view thereof;

FIG. 6 is a top plan view thereof; and,

FIG. 7 is a bottom plan view thereof.

The broken lines shown in the drawings are for the purpose of illustrating portions of the wall charger that form no part of the claimed design. 

CLAIM The ornamental design for a wall charger, as shown and described. 